Be cautious of what you ask for and by what name you call it. Even asking at your local hardware store for hydrochloric acid will get you raised eyebrows or “we do not have that”. Ask for muriatic acid to clean concrete or mortar (same stuff) and they will say “right over here at $5 a gallon). Dairy farms are also big users of iodine that is not of the povidone variety. Beware, even though you are using these chemicals for a non nefarious use, you will be judged by your governments worst expectations of your intent when trying to buy.
I have raised livestock (critters you can eat) most of my life, near 50 years. When I decided to do some iodine tests in refining, I naturally went to the feed store for iodine (it was always there). It is the same place I bought injectable penicillin and other drugs without a prescription for my animals for the last 30 years. Long story short, I had to explain my intended use of the iodine to the state troopers that very shortly arrived on scene due to the use of iodine in illegal drug manufacturing.
The lesson here is that if you are new to refining and cannot adequately explain how you plan to use the chemicals you wish to purchase, you are guilty by default.
Hindsight in my reply, this only reinforces what you hear from all of the moderators that many of the new members complain about. Read, read, and read some more here, so you know what you are doing before you start to implement it in fact. If you deal with these chemicals and processes and are not fluent in your description as to how you are using them, you may well find yourself behind bars for a good chunk of years.
One farmers fertilizer is another man’s Oklahoma City bombing.
Yes, I actually said that out loud! We all need to understand these implications, and do our best to keep new members safe. Beyond that we need to try to walk a fine line in order to not help someone that is only mining for data to do something unethical or downright illegal.
One man’s opinion,
Oz